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七十年代以来,电子技术的迅猛发展使电子仪表的可靠性与功能大大提高,同时使成本亦大为下降。另一方面,由于能源价格上升,金属原材料价格也上升,而气动仪表结构上的变化不大,工艺上的改进不多,所以传统气动仪表的价格难以下降。这一情况很不利于气动仪表的生产和应用。根据国外的估计,气动仪表的销售有逐渐下降的趋势。然而,由于气动仪表的可靠性在长期使用中得到证实,以及它具有天然
Since the 1970s, the rapid development of electronic technology has greatly enhanced the reliability and function of electronic instruments, while at the same time greatly reduced the costs. On the other hand, the price of metal raw materials also rose due to the rise of energy prices, while the structural changes of pneumatic instruments were not significant and the improvements in technology were limited. Therefore, the price of traditional aerodynamic instruments was hard to drop. This situation is not conducive to the production and application of pneumatic instruments. According to foreign estimates, the sales of pneumatic instruments have a gradual downward trend. However, due to the reliability of pneumatic instruments in the long-term use has been confirmed, as well as it has a natural